Compensator



Nov. 7, 1944. R. J. ANscHlcKs COMPENSATOR Filed April l5. 11945 JMS.

Patented Nov. 7, 1944 UNITED y STATES .PATENT OFFICE f i 2,362,232 I Y y COMPENSATOR "Rudolph J. Anschicks, Chicago, Ill., assignor to Protectoseal Companyr of America, Incl., Chicago, Ill., a corporation of Illinois Application April y15, 194.3, Serial No. 483,115

8 Claims. (Cl. 1277-271) yMy invention belongs to that general class of devices known as valves and relates particularly to a novel xfornirci valve, either .a single or double check valve. Thevalve is particularly adapted for use as a check Valve in a pipe line or conduit to control or break up pressure waves or surges cient ,and `dependable checkyalve of the kind which is not `subject :to vsticking fbecause of cors rosion Aor from non-use or becoming inoperable under sudden or yexcessive pressures.

The device 4has as affurther object the production -of Y a device which :will Ysubstantially cushion lthe shock of a surge of. liquid, break up `the surge and reset itself, yoperating in a successionV of checking actions ifrequired and gradually relieving rthe'p-ressure.` A

The device as illustrated is a doublecheck valyeloperatng ineither direction, to stop :a surge from leither side, and at vthe same time operative to expedite the release of fluid into the loW p1^-.essure side should it be required. The invention may -be embodied in a single check for `breaking vup a ysurge from a single direction.

Manyk 'other objects and advantages vof the -constructionherein shown and .described -Will be obvious to those skilled in the 4:art from the disclosure herein given.

To this end my invention consists in the novel construction, arrangement and combination of `parts herein shown and described and more particularly ,pointed out in the .appended claims.

E1n 'the drawing wherein like reference char Jacters indicate like .or 1corresponding parts:

fl is a :sectional View illustrating `the embodiment of my invention Ain a ydouble Acheck 4showing the parts vin :their normal position,

Fig. 2 isla similar View .showing vthe parts in 'changed positions, and Fig. 43 is a `cross section taken .on the line :3---3` of Fig. 1.

As shown, I generally `represents 'a housing Aor Aportion vof a conduit of the .desired .size shape vand material. `The `particular housing shown consists `of va .part `i! Lconstructed for connection Ywith Aa conduit Vor the likek (not shown) and 4 represents a similar part arranged at 5 for Iconnection to a cooperating conduit or part .inet shown) These-.two parts may be secured together in iany Asuitable manner,v as shown, they threadedly engage each other, which construction facilitates assembly of the unit. Arranged within the housing is a partition or Wall 6 which may be threaded as at Ii -to .engage oneioi `the housing parts `as shown at 4 =or otherwise secured in place. This partition 6 is .provided With .an open ing through the saine* aiTordi-ng `comnninication between. the housing .chambers I I and I2 at the two sides .of .the partition. Arranged Within the housing and carried by the `partition' 6 isa hel!- ical or coiled spring element 8 of thedesired size .and shape and foi ,suitable material ,and resiliency.

Normally, the `,coils ,of v.the spring are separated or open as indicated at 9. As shown, ,the spring is mounted in lthe partition With one end in 4one ,chamber I I and the other end-in the other lham-` ber I2, and .the Afree ends are )closed by .Caps l0. rThe spring may be supported or maintained in place inthe housing by threading the Vsame in the partition 6 at the opening. The .caps :may 4be likewise secured .in place. It is immaterial Whethergthe spring is one continuous spring or two springs with .their lends abutting in ,the partition. The :spring .should be .of ,such size Aor proportion that Vthe area between the .coils is ,as great or `greater than the .area .of the `housing inlet port so .as to normally -pelmit iree 4flow through the same. It will .be noted that the chambers IfI and I2 are .of a size not .to restrict thevpassage rof the iiuid through the same `and about the spring valve and caps.

In use, .the .device .is `connected in a Systemes for example .connectedat each end to the adjaf cent ends .of conduits `in `a pipe line, Normally. fluid may flow through the housing from one end to the other Aas, for example through one .end `HI and out through the end I5, it being immaterial which is the .direction `of flow. vWe may `assume that .the direction is as indicated by the `arrow `at the end L4. Normally, the fluid flows into the housing :and between the coils at 9 to l.the interior of -`the spring and ,thence vthrough .the .spring `and out through the spaces .9 at the opposite side ,in .chamber 1.2 .and .out through l5. 1n case ,of `a .sudden .surge vof -iluid .through .the conduit into :the housing `as :for example due to an ,explosion .or -for some other reason, the vsurge .pressure .will .cause lthe spring-.in chamber I .I to contract vclos ing :the yspace lbetween ythe coils substantially as shown in Fig. 12, .the Various coils constitute `:sube

in the spring by the spring end in chamber I2 extending as shown at the left of Fig. 2. Ordinarily, the spring in chamber II will then extend or restore itself after the surge is over and the end in chamber I2 contract or restore itself so that the parts take their normal positions as shown in Fig. 1, which are their normal operating positions. v Obviously, the device constitutes a double-acting check valve operative to stop or control surging from either direction. It is, of course, obvious that the spring may be provided in only one chamber as for example I I and omitted in cham-- circular cross-section, obviously any other crossl sectional shape of wire making up the coil may be employed. Any means for guiding 'the spring in its movements may be provided, a simple and satisfactory construction consisting of ribs, lugs or pins 20 on the caps, or similar ribs (not shown) on the interior of the housing.

From the preceding, it will be obvious that the device normally does not interfere with the free passage of fluid through the housing. In the event, however, of a surge, its progress will be checked, and thereafter the coils will tend to again open up to permit free circulation through the conduit. l

Having thus described my invention, it is obvious that various modicationsmay vbe made in the same without departing from the spirit of my invention; hence, I do not wish to be understood as limiting myself to the exact form, arrangement, and combination of parts herein shown and described or uses mentioned.l

What I claim as new and desire to secure by Letters Patent is:

l. In a double action check valve of the kind described, a housing provided with openings for the passage of fluid through-the same, a transverse stationary partition having an opening therethrough, disposed between said housing openings dividing the housing into two associated communicating chambers, a helical spring closed at its ends and arranged in said partition with one end in one chamber and the other end in the other chamber, the coils of the spring normally spaced apart to permit unrestricted passage of fluid through the housing and the coils in each chamber seating upon each other when the closed spring end in that chamber is `subjected to a sudden surge of fluid toward the partition, whereby to close the passages between the coils in that chamber.

2. vIn a double action check valve of the kind described, a housing arranged for connection in a pipe line and to constitute a part thereof and provided with openings for the passage of iiuid to and from the same, a stationary partition having an opening through vthe same and disposed between said rst mentioned openings dividing the housing into tWo associated communicating chambers, a helical spring closed at its ends and connected to said partition at the opening therethrough with one end in one chamber and the other end in the other chamber, the coils of the spring in both chambers normally spaced apart to normally permit unrestricted passage of fluid through the spring and housing and the coils in each chamber seating upon each other when the closed spring end in that chamber is subjected to a sudden surge of fluid toward the partition,

whereby to close the passages between the coils in that chamber.

3. In a check valve of the kind described and in combination, a housing provided with openings for the admission and discharge of fluid to or from the housing and an apertured stationary partition dividing the housing into a plurality of communicating chambers and means for controlling the passage of fluid between the chambers consisting of a helical spring closed at each end and mounted in the aperture in the partition with one end in one chamber and the other end in the other chamber, the coils of the spring normally spaced apart to permit passage of fluid through the housing and the coils in each chamber seating upon each other when the closed spring end in that chamber is subjected to a sudden surge of fluid toward the partition, whereby to close the passages between the coils in that chamber.

4. A check valve of the kind described and in combination, a housing provided with ports for the admission and discharge of fluid through the housing and means for controlling movement of uid through the casing consisting of a helical spring mounted in the housing and extending toward the admission port, said spring being closed at the end adjacent the admission port and arranged at the opposite end to communicate with said discharge port, the coils of said spring normally spaced from each other, but contractable to close upon an abnormal surge of fluid into the housing through the admission port, and cooperating means between the closed end of the spring and housing wall for limiting transverse movement of the closed end of the spring.

5. In a check valve of the kind described and in combination, a housing constructed for connection with a conduit and provided with ports communicating with the conduit for admitting iiuid to the interior of the housing and discharge therefrom, a stationary partition having an opening therethrough and arranged in the housing separating the same into two associated communicating chambers, a helical spring mounted in said opening in said partition and projecting into each chamber, each free end of the spring provided with a closure, the coils of the said spring normally spaced apart to permit communication between the two chambers through the said spaces, said spring constituting means for controlling the passage of fluid between the chambers whereby upon excessive pressure in one chamber due to fluid surge in one direction, the coils in said chamber will tend to close the spaces between them, and the coils in the other chamber will extend.

6. In a check valve of the kind described and in combination, a housing arranged for connection to a conduit and providing a portion of the conduit, a stationary partition arranged Within the housing dividing the same into two chambers, said partition having an opening for communication between the chambers, a helical spring arranged within the housing and carried by the wall of said opening in said partition with a portion of the spring in one chamber and a further portion in the other chamber, the coils of said spring normally spaced apart, and a cap or closure on each of the free ends of the spring, whereby an excessive fluid surge against one side of the cap in one chamber causes the spring to contract in said one chamber and expand in the other.

7. In a check valve of the kind described and closure on each of the free ends of the spring, the

said spring operable to contract in the admission chamber and to expand in the discharge chamber, and means for guiding the free ends of the spring.

8. In a double action check valve, a housing provided with openings at its ends for the passage of fluid through the housing, a stationary partition having an opening therethrough, disposed betweeny said housing openings and dividing the housing into two associated communicating chambers, a helical spring threadedly mounted midway between its ends in the partition, with its end portions extending respectively into the two chambers, caps one mounted on each end of the spring and `closing said end, the coils of said spring normally being spaced apart to permit unrestricted passage of fluid through the housing, but the coils in either chamber being capable of seating upon each other to close the passage through the partition upon a sudden surge of fluid against the cap on that portion of the spring contained in the chamber in which the surge OCCllIS.

RUDOLPH J. ANSCHICKS. 

